MedicalVocabulary.org
Medical vocabulary with 16,436 clear, complete and reliable definitions.
About MedicalVocabulary.org
The most complete online medical dictionary: 16,436 terms covering anatomy, physiology, pathologies, diagnostic exams, pharmacology and every clinical specialty.
Designed for 3 kinds of users:
- Patients and family who want to understand a diagnosis, a medical report or instructions from a doctor.
- Students of medicine, nursing, physiotherapy and the health professions, dealing with technical terminology.
- Doctors, pharmacists and healthcare workers who need a quick and reliable reference.
Definitions are written in clear, accessible language while keeping the rigor required for professional use. Each term has a dedicated URL, instant autocomplete search, and can be shared on WhatsApp, Facebook, X and via email with one click.
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Disclaimer: the content is for informational and educational purposes only and does not replace medical advice. If you have doubts about your health, always consult a qualified professional. In case of emergency call your local emergency number (911 in the US, 112 in the EU).
Apex
From the Latin meaning summit, the apex is the tip of a pyramidal or rounded structure, like the lung or the heart. The apex of the lung is indeed its tip, its rounded most superior portion. The apex of the heart is likewise its tip, but…
Read the definitionRandom terms
Show more- Sequencing Learning the order of nucleotides (base sequences) in a DNA or RNA molecule or the order of amino acids in a…
- Brainstem The lowest part of the brain which merges with the spinal cord and provides the major route by which the…
- Priapism Abnormally persistent erection of the penis in the absence of sexual desire. Priapism can occur in persons…
- Random number table A table of numbers generated in an unpredictable, haphazard sequence. Tables of random numbers are used to…
- Skin erosion Skin erosion is a loss of some or all of the epidermis (the outer layer) leaving a denuded surface. Erosion…
- Sagittal A crucial large vein that goes over the top of the skull from front to back and then splits to take blood…
- Hepatic encephalopathy Brain dysfunction directly due to liver dysfunction, most often recognized in advanced liver disease. Hepatic…
- Disease, Legg-Perthes See Legg-Calve-Perthes disease
- Humerus The long bone in the arm which extends from the shoulder to the elbow.
- Paraskevidekatriaphobia Fear of Friday the 13th. The word 'paraskevidekatriaphobia' was devised by Dr. Donald Dossey who told his…
- RECOMBIVAX-HB A vaccine against hepatitis B (hep B) to stimulate the body's immune system to produce antibodies against the…
- Nipple shield A cap or dome, usually made today of plastic (formerly, rubber), placed over the nipple and areola during…